Apparatus for calking fins



INVENTOR 14 zlfi elm 3 fiz'onander 4 Sheets-Sheet l BY & ATTORNEY 7 W. B. BRONANDER APPARATUS FOR CALKING FINS July 17, 1951 Filed May 27, 1944 ML ww mm July 17, 1951 w. B. BRONANDER APPARATUS FOR CALKING FINS 4 Sheets-Sheet 2 Filed May 27, 1944 QM E Q ww sQfin/fli? 07////// //////07// 7// ////%r m Y B A July 17, 1951 w. B. BRONANDER 2,561,174

APPARATUS FOR CALKING FINS Filed May 27, 1944 4 Sheets-Sheet s- 5.5L ma-1 ATTORNEY July 17, 1951 w, BRQNANDER 2,561,174

APPARATUS FOR CALKING FINS Filed May 2'7, 1944 4 Sheets-Sheet 4 BY 04 20 ATTORm Patented July 17, 1951 UNI T ED 5 TAT E ATM '1' "PF ICE.

APPA-RATUS FOR CALKING FIN-S Wilhelm B. Brena-odor. Mnntclair, N. 3.

Application Mayf27, 1944., Serial No. 537,185

((31. fill-19) 2 Claims. .1

This invention relates to, cooling More particularly stated, the invention relates to :a method of calking cooling tins and to :a machine for securing fin sections to the wall of an element to be cooled. This application .is a continuation'inpart of application Serial No. 464.;627, filed November 5, 1.942,, new Patent No. 2,379,879, granted July 10., 1945.

This invention has for its salient-object to provide a method oi and apparatus tor applying cooling fin sections to an element to be cooled, so arranged and so constructed that the fin sections will be accurately and securely anchored or .calked.

Another object of the invention is to provide a method of and apparatus for calking cooling fins so worked out and so constructed that the tubular wall to which the sections are secured will not be distorted or forced out of alinement.

Another object :of the invention is to so secure or calk the .fins that each fin section will be forced into its groove and anchored or calked therein with the required force.

F'u-rther objects of the invention will appear from the following specification taken in connection with the drawings which form a part of this application, and in which Fig. l is 'a top plan view of a machine constructed in accordance with the invention;

Fig. 2 is an elevation showing the drive for the mandrel on which the member to be provided with fins is mounted;

Fig. .3 is .an enlarged sectional elevation taken substantially on .line 3--3 of Fig. 1., looking in the direction of the arrows;

Figs. 4 and .5 are respectively sectional elevations taken substantially .on lines 4-45 and 5-5 of Fig. 3, looking in the direction of the arrows;

Fig. 6 is a plan view of one of the trays .for

supporting the presser bars which calk the fin sections in the grooves;

Fig. '7 is a longitudinal sectional elevation of the tray shown in Fig. -6.;

Fig. 8 is an elevational view and Fig. .9 is a plan or edge view of one of the presser bars;

Fig. 10 is an elevational view of one of the spacing and alining plates for alining the presser bars;

' ig. 11 is a plan view of the plate shown in Fig. 1'0;

Figs. 12 and 13 are elevation and plan views re 'spectively of one of the segmental plates used for insuring the proper parallel relation of the fin walls;

Fig. l4 is an enlarged-sectional elevation showing the fins in the grooves before and atter calle- .i-g. 1 5 is a fragmentary sectional elevation showing the manner of use of the segmental spacing or fin Wall positioning plates; and

Fig. 16 is a sectional --elevation showing particularly the staggered mounting of the seetions.

The invention briefly described: consists of a method and machine for calkingfin sections "to the wall of a cylinder 101 -.oth-er element on which the sections are to be mounted. The cylinder or wall is mounted on a rotatable mandrel and the fin sections are initially placed in grooves around the wall. The .fin sections consist double walled fin units in which the walls are substam tially parallel and material isjprovided between the walls at their connected edges to anchor the walls in the grooves when pressure normal to the axis of .the element on which the :fms are mounted is exerted in the manner hereinafiter dsscribed. The fin sections are pre bont longitudinally to.-confonn to the arc of the groove in which they are to be mountedaznd each section is preferably so dimensioned longitudinally tooccupyone half of the circumference of the roove.

'llhe fin sections are initially placed in the grooves and successive sections :are preferably sta gered so that the ends thereof will not be disposed in alinement with the other sections. If desired, the sections in alternate grooves may be displaced around the circumference to the desired extent so that, as above stated, the division lines between the sections will not be disposed in alinement.

The fin sections may be temporarily secured by manually forcing the portions :of the side walls into gripping engagement with the walls of the groove and after the no sections have been mounted in the manner described, suitable :means is actuated to insure the proper parallel. relation of the fin walls and the proper alhiement of the walls with presser bars which are thereafter manually moved between the walls of. the fin sections under resilient pressure :of :a presser Toll disposed .therebeneath, These nresser ,:bars, which are preferably operated one at a time, exert pressure on the material disposed between the tin walls and expand the inner edges orthese walls which :are disposed in the groove into firm gripping engagement with the groove walls.

Further details of the invention will appear from the following description.

In the particular embodiment of the invention illustrated and in the particular machine or apparatus shown for carrying out the method, there is shown a machine supported on a base 23 having suitable legs 2|, the base having secured thereto a pair of brackets, each having a base portion 22 secured to the base 20, an upright portion 23 and an upper laterally extending elongated portion 24.

The mandrel 25 is rotatably mounted in a bearing 26 carried by a bracket 21 mounted on the base 20. The rear end of the mandrel 25 is mounted in the bearing in a bracket 33 and has secured thereto a worm wheel 3| which meshes with a worm 32 carried by a shaft 33 on which is mounted a pulley 34. The pulley 34 is driven from any suitable source of power.

In the particular form of the invention shown, a cylinder 35 is mounted on the mandrel 25. The cylinder 35 has a flange 36 and the mandrel has secured thereto an arcuate block 3'! which is undercut at 38 to receive the inner end of the cylinder and form an abutment therefor. The block 31 has a longitudinal opening 39 which receives a pin 40 which also extends through a bolt hole or opening 4| in the flange 35. The collar 37 is secured to the mandrel in any suitable manner, as by bolts 42.

In the form of the invention shown, the cylinder 35 is provided with a plurality of parallel circumferential grooves 43 which are adapted to receive the cooling fin sections.

.The cooling fin sections, as shown in Fig. 3, are preferably semi-circumferential in length, or, in other words, each section to conform to the curvature of the groove and is of sufficient length to occupy one half of the circumference of the groove.

The fin sections are preferably formed with two walls 5| and 53 which, as shown in Fig. 14, are disposed substantially parallel and are spaced apart at their connected edges by an inwardly bent U-shaped loop integral with the walls of the-fin. The fin sections are anchored by forcing inwardly on the portion 54 between the fin walls, thus forcing the inner edges of the fin walls 5| and 53 laterally into firm gripping engagement with the walls 55 and 5B of the groove. The fin shown at the left in Fig. 14 is illustrated in anchored position in the groove.

The fin sections are initially placed in the grooves and temporarily anchored therein by manually forcing the material 54 between the fin walls inwardly by a tamping tool which is inserted between the walls 5| and 53. The material 54 may be forced inwardly, if desired, at the ends of the fin sections.

In order to prevent the cylinder wall from being forced out of alinement by pressure against the Wall by the calking bars, the fin sectionsare staggered around the circumference of the cylinder so that the lines of separation between the sections will not be disposed in alinement. If desired, alternate fin sections may be offset circumferentially. For instance, one section may be advanced 90 from the preceding section or any desired arrangement can be used.

The elongated bracket portions 24 support trays constructed as shown particularly in Figs. 6 and 7. Each tray has a base 6|, side' walls 62 and 63, a back wall 64 and at the opposite end thereof a plurality of equally spaced upwardly extending spacing plates 65 formed on or carried by a bar 14 which forms the front end of the base of the tray. The outer ends of these plates are prefis Dre-curved or bent erably tapered, as shown at 66, for a reason hereinafter explained. The plates 65 are spaced apart to receive therebetween presser bars 61 shown particularly in Figs. 8 and 9. These bars are flat and may, if desired, be provided with openings 69 to receive a suitable tool for moving the bars longitudinally. As shown in Fig. 1, one of the trays 50 is filled with spacing bars and the other tray is empty.

The trays are properly positioned on the bracket portions 24 by means of upwardly extending lugs 10 and 1| which are disposed at the ends of the bracket portion 24 and engage the side 'walls 62 and 63 of the trays. The inner portion of each bracket portion 24 is recessed, as shown at 13, to receive the cross bar 74 disposed on the bottom of the tray which further positions the tray on the bracket.

In order to insure the parallel relation of the fin walls 5| and 53 so that the calking bars or presser bars 61 will enter between the walls of the fin, suitable means is provided, as shown particularly in Figs. 3 and 15. This means consists of a shaft 75 which is rotatably mounted and has secured thereto a handle 16. The shaft 75 is mounted in brackets 'l'i carried by base portions 22 and extends through alined openings formed in the upper ends of a plurality of plates 78 which are mounted on rods 19 and 83 and are maintained in spaced relation by washers 8| The plates 78 are tapered, as shown at 8| in Fig. 11, to form flared openings therebetween at the right hand ends thereof, viewing Fig. 3. These openings between the plates are disposed in a1ine-' ment with the openings between the plate 65 of the tray 60 and are adapted to receive and guide the calk bars 61 as these bars move forwardly between the walls 5| and 53 of the fin sections.

The shaft 15 has projecting laterally therefrom a spline bar 32 which extends through slots 83 formed in arcuate plates 34 mounted on the shaft 75 and tapered as shown in Fig. 13. The slots are larger in dimension than the spline bar 32 and thus permit a lost motion movement of the plates on the shaft relative to the spline bar 32. 7

In the, position of plates 84 shown in Fig. 15, if the plates are properly alined with the opening between the walls 5| and 53 of the fin sections, they will drop into this opening, as shown at 85 in Fig. 15. However, if one of the walls is bent out of position, the plate 34 may strike against the outer edge of the wall, as shown at 86 in Fig. 15. This wall is then bent to permit the entry of the plate After all of the plates 84 have dropped into the position shown at 85 in dotted lines, the handle 15 is rotated in an anticlockwise direction, viewing Fig. 3, thus causing the spline bar 82 to move the plates to the position shown in Fig. 3, in which position they are disposed between the walls 5| and 53 of the fin sections. When the fin walls have been properly alined, as above described, the calking bars 5'! are moved one at a time longitudinally between the plates 18 and into the space between the walls 5| and 53.

In order to give the desired upward pressure to the calking bars so that material between the walls 53 will be forced inwardly to expand the walls laterally into anchored position, a presser roll 93 is mounted beneath the path of movement of the bars, this roll having a plurality of circumferential grooves 3| so spaced as to receive the bars 5?, the distance between the grooves being determined by the spacing of the fin sections on the cylinder wall.

The presser roll 90 has a cylindrical opening 92 which receives a shaft 93, the axis of the shaft being shown at 66. The shaft 93 has reduced end portions 95 mounted in ball bearings 96 and the outer ends of the shaft are further reduced as shown at 97, these outer ends being mounted in ball bearings 98. The outer ends 91 of the shaft are formed on an axis 99 which is eccentric to the axis 94 of the portion 92 of the shaft on which the roll 90 is mounted. A pair of arms I are secured to the reduced portions 95 of the shaft 93. The outer end of each arm I00 has pivoted thereon at l0l, a vertically extending stud or bolt having a shank 102 which extends downwardly through an opening in the base 20. A spring I04 surrounds each of the shanks I 02 and abuts against a shoulder I05 and at its opposite end against the upper surface of the base 20. Nuts I06 threaded on the lower end of the stem I02 limit the upward movement of the arm I00. The spring I04 tends to force the arm I00 in a clockwise direction about the axis 9 This tends to rotate the shaft 92 which, being eccentric to the ends 91 of the shaft, tends to elevate the roller 90 or to force it upwardly. This upward spring pressure is communicated to the calking bar and exerts a resilient upward pressure against the bar, thus forcing the bar with the desired pressure into the space between the fin walls 5! and 53 and forcing the material 54 between the fin walls inwardly to anchor the walls firmly in the groove.

Each calking bar 01 is initially moved by hand into operative position and as it moves between the portions 54 of the fin sections mounted on the cylinder carried by the rotating mandrel 25 and the presser roll 90 the calking bar will move longitudinally and during this movement exerts its calking action, thereby anchoring the fin section. The calking bar then moves between the plates 65 in the opposite tray 60. After all of the bars have performed their function the trays are then reversed, the full tray being placed in position to supply calking bars for the next call:-

ing operation.

From the foregoing specification it will be clear that a simple and practical method and apparatus have been provided for effectively and ex- 6 V vention has been particularly shown and. described, it will be understood that the method and apparatus are not limited to the particular.. details set forth and illustrated but that changes in the method and in the apparatus may be made without departing from the spirit or scope of the invention, as expressed in the following claims.

What I claim is:

1. A machine for anchoring fin units having substantially parallel walls and compressible material between the walls in substantially parallel grooves of cylinders, comprising a rotatable support for the cylinder, means for supporting a plurality of individually movable presser bars in spaced relation and in alinement with the spaces between the fin walls of each fin unit, means for guidin said bars into aid spaces to engage and compress or calk the material between said walls, means for receiving said bars after they have performed their calking operation and for maintaining the bars in their proper spaced relation, and a resiliently actuated grooved roller having a groove for eachbar for guiding and forcing said bars against said compressible material to compres said material and force the portions of the fin walls in the grooves laterally into tight engagement with the groove walls.

2. A machine for anchorin fin units having substantially parallel walls and compressible material between the walls in substantially parallel grooves of cylinders, comprising a rotatable support for the cylinder, a presser bar disposed in alinement with the space between the walls of each groove and each unit disposed therein and movable thereinto, and a resiliently actuated, grooved roller having a groove for each bar disposed adjacent the path of movement of each bar for pressing said bar into its space and against said compressible material as each bar is moved into operatable position.

WILHELM B. BRONANDER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,001,116 York Aug. 22, 1911 1,668,534 Berg May 1, 1928 1,990,140 Seiferth Feb. 5, 1935 2,008,002 Calkins July 16, 1935 2,036,417 Laird Apr. '7, 1936 2,347,350 Jung et a1 Apr. 25, 1944 2,363,224 Bronander Nov. 21, 1944 

